Retrospective Evaluation of Cured-in-Place Pipe - (NEPIS)(EPA ...

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5.2.13 Tensile Testing. Specimens with dimensions consistent with the values provided by ASTM D638 were cut from the crown, spring line, and invert of the exhumed CIPP liner as shown in Figure 5- 15. A total of 15 specimens were prepared and tested (five from each location). Figure 5-15. Tensile Specimens for Columbus 8-in. Liner: Before the Test (Left) and Following the Test (Right) Using the information given in Table 5-9, the following figures were drawn: Stress-strain curves for crown samples, spring line samples, and invert samples (Figure 5-16). Table 5-9. Summary of Results from Tensile Testing for Columbus 8-in. Liner Area Peak Load Peak Stress Mod. E Location on Pipe (in. 2 ) (lb) (psi) (psi) Crown 1 0.1309 580 4,430 414,243 Crown 2 0.1462 545 3,730 341,317 Crown 3 0.1258 544 4,325 432,060 Crown 4 0.1346 497 3,694 465,690 Crown 5 0.1338 525 3,920 369,896 Average - - 4,020±340 404,641±49,467 Spring Line 1 0.1401 459 3,274 327,792 Spring Line 2 0.1720 644 3,747 348,035 Spring Line 3 0.1651 763 4,619 362,158 Spring Line 4 0.1612 581 3,607 328,744 Spring Line 5 0.1753 567 3,233 327,516 Average - - 3,696±560 338,849±15,656 Invert 1 0.1273 516 4,051 341,223 Invert 2 0.1318 474 3,597 301,994 Invert 3 0.1352 556 4,114 353,743 Invert 4 0.1346 455 3,383 359,622 Invert 5 0.1318 563 4,265 364,794 Average - - 3,882±374 344,275±25,215 Overall average - - 3,866±426 362,588±43,629 76
Figure 5-16. Tensile Stress-Strain Curves for Crown, Spring Line and Invert (Columbus 8-in.) 77
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EPA/600/R-12/004 | January 2012 | w
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DISCLAIMER The work reported in thi
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ACKNOWLEDGMENTS This report has bee
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samples had a flexural modulus valu
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CONTENTS DISCLAIMER ...............
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4.3.10.2 Upstream Sample ..........
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9.2.2 Recommendations for Developme
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Figure 5-27. Raman Spectra for the
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ABBREVIATIONS AND ACRONYMS AMP Asse
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1.0: INTRODUCTION This report forms
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1.2 Organization of the Report Foll
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Some sections of a sewer system may
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• The depth of the pipe below the
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Figure 2-3 highlights the main diff
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The most commonly used resins are i
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the glass fiber. The tube, which is
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3.0: DEVELOPMENT OF CIPP EVALUATION
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• The municipality would be willi
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• Measurements and/or physical sa
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Table 3-3. Laboratory Evaluation an
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4.1 Introduction 4.0: CITY OF DENVE
Page 43 and 44: Figure 4-1. Images of the Recovered
Page 45 and 46: Sample ID Figure 4-4. Soil Grain Si
Page 47 and 48: Location Table 4-5. Denver 8-in. Li
Page 49 and 50: Profile Plot Red - Steel tube Green
Page 51 and 52: Table 4-7. Results from Flexural Te
Page 53 and 54: 35 Table 4-9. Comparison of Test Da
Page 55 and 56: 4.2.12 Buckling Test. A steel mecha
Page 57 and 58: Figure 4-18. Pressure Gage and Pres
Page 59 and 60: 4.2.13 Shore D Hardness. Durometer
Page 61 and 62: Figure 4-24. Barcol Hardness Readin
Page 63 and 64: increases and the heat of cure decr
Page 65 and 66: In summary, CCTV inspection of thre
Page 67 and 68: Figure 4-28. Thickness for Denver 4
Page 69 and 70: 4.3.6.2 Downstream Sample. Seven sp
Page 71 and 72: Figure 4-34. Flexural Stress-Strain
Page 73 and 74: Table 4-18. Flexural Test Results f
Page 75 and 76: 4.3.8.2 Upstream Sample. Specimens
Page 77 and 78: 4.3.10 Barcol Hardness 4.3.10.1 Dow
Page 79 and 80: 4.3.11.2 Downstream Sample. The Ram
Page 81 and 82: 5.1 Introduction 5.0: CITY OF COLUM
Page 83 and 84: April 16, 2010 The specimen was rec
Page 85 and 86: The resulting gradation curves are
Page 87 and 88: Table 5-4. Soil pH at Designated Lo
Page 89 and 90: Figure 5-8. Average Thickness at Di
Page 91 and 92: 5.2.12 Flexural Testing. Specimens
Page 93: Figure 5-14. Flexural Stress-Strain
Page 97 and 98: 5.2.15 Buckling Test. A mechanical
Page 99 and 100: Figure 5-24. Localized Leak on the
Page 101 and 102: Figure 5-26. Barcol Hardness Readin
Page 103 and 104: 5.3.3 Visual Inspection of Liner. I
Page 105 and 106: Figure 5-32. Ultrasonic Testing for
Page 107 and 108: Table 5-13. Geometric Data for Flex
Page 109 and 110: Figure 5-38. Shore D Hardness of Co
Page 111 and 112: 6.1 Introduction 6.0: REVIEW AND CO
Page 113 and 114: Overall, the liners appear to be ho
Page 115 and 116: age difference between the liners i
Page 117 and 118: Looking for correlations to the low
Page 119 and 120: A significantly lower range of Shor
Page 121 and 122: 7.0: RECOMMENDED TEST PROTOCOL FOR
Page 123 and 124: combining this broadly available in
Page 125 and 126: Table 7-3. Overall Structure for a
Page 127 and 128: Table 8-2. CIPP and Other Rehabilit
Page 129 and 130: Table 8-5. Rehabilitation Specifica
Page 131 and 132: 113 Table 8-9. Process Verification
Page 133 and 134: Göttingen Stadtentwässerung: Göt
Page 135 and 136: experience and quality, and do not
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Page 139 and 140: methods are detailed in the Guide t
Page 141 and 142: The business of pipeline rehabilita
Page 143 and 144: • Destructive testing (but will n
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In Denver, in CCTV inspections of n
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9.2 Recommendations for Future Work
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Falter, B. 1996. “Structural Anal
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Lehmann, M.A, J.P. Schroeder and C.
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APPENDIX A LIST OF TEST STANDARDS R
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The following table lists the non-A
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B.1 Introduction This study was con
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Mean thickness values for each cont
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APPENDIX C INTERNATIONAL STUDY INTE
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The original Insituform liner insta
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However, the figures published by O
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exfiltration and infiltration. Any
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STW uses CIPP for virtually all of
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method. Top hat repairs to junction
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All design and construction supervi
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Process verification test samples a
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consultant born out of the corporat
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BW continues to use CIPP, mainly in
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East, but has not yet had marked su
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